Patents by Inventor David D. L. Adam

David D. L. Adam has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Shutdown methods and designs for fuel cell stacks
    Patent number: 7955739
    Abstract: Improved water distribution can be obtained within the cells of a fuel cell series stack by maintaining a suitable temperature difference between the cathode and anode sides of each cell in the stack during shutdown. This can be accomplished by thermally insulating the “hot” end and sides of the stack and by providing a thermal mass adjacent to the “hot” end.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: June 7, 2011
    Assignee: BDF IP Holdings Ltd.
    Inventors: Radu P. Bradean, Herwig R. Haas, Christopher J. Richards, David D. L. Adam